It is still under discussion __________the old bus station should be replaced with a modern hotel or not.

patient who had suffered from H1N1 insisted on_____________fromothers immediately, holding the belief that the disease would infect others

He used to travel far and________, so he got ________ on geography.

When the teacher told the boy to sit down, he _____ to her and said she couldn’t make him.

Shall we go and ______ hello to the old man —Good idea! Let’s go.